Stainless steel flange compensator

Abstract

The utility model discloses a stainless steel flange compensator, which relates to the technical field of flange compensators, and structurally comprises an outer corrugated pipe and an inner corrugated pipe, the inner corrugated pipe is sleeved inside the outer corrugated pipe, the telescopic cambered surfaces of the outer corrugated pipe and the inner corrugated pipe are relatively parallel, and two ends of the outer corrugated pipe are fixedly connected with connecting flanges. A flange hole is formed in the surface of the connecting flange, an annular air bag is arranged between the outer corrugated pipe and the inner corrugated pipe and located between the vertical face of the outer corrugated pipe and the vertical face of the inner corrugated pipe, and a connecting pipe is jointly connected between one side of the annular air bag and the inner corrugated pipe through a pipe. According to the stainless steel flange compensator, the self-adaptive adjusting capacity of the compensator under high pressure is improved, the overall service life of the compensator is prolonged, and the overall strength of the compensator is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of flange compensators, specifically a stainless steel flange compensator. Background Technology

[0002] Expansion joints, also commonly called expansion joints or contraction joints, consist of a bellows as their main working body, along with end pipes, supports, flanges, conduits, and other accessories. They are a type of compensating element that utilizes the effective expansion and contraction of the bellows to absorb dimensional changes in pipelines, conduits, and containers caused by thermal expansion and contraction, or to compensate for axial, lateral, and angular displacements. They can also be used for noise reduction and vibration damping, and are widely used in modern industry. In heating systems, to prevent pipeline deformation or damage due to thermal expansion or temperature stress during heating, expansion joints are installed to compensate for thermal expansion, thereby reducing stress on the pipe walls and the forces acting on valves or support structures.

[0003] Existing stainless steel flange compensators, due to their low strength, are prone to rupture and damage when used in high-pressure gas pipelines, especially when high pressure causes large gas pressure. This results in a short service life for the compensators and fails to meet user requirements. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a stainless steel flange compensator, which solves the problem that due to its low strength, the compensator is prone to breakage and damage when high pressure is generated during the use of high-pressure gas pipelines, resulting in a short service life and failing to meet the user's needs.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: A stainless steel flange compensator includes an outer corrugated pipe and an inner corrugated pipe. The inner corrugated pipe is sleeved inside the outer corrugated pipe, and the expansion arc surfaces of the outer and inner corrugated pipes are relatively parallel. Connecting flanges are fixedly connected to both ends of the outer corrugated pipe. Flange holes are formed on the surface of the connecting flanges. An annular air bladder is disposed between the outer and inner corrugated pipes. The annular air bladder is located between the vertical surfaces of the outer and inner corrugated pipes. A connecting pipe is connected to one side of the annular air bladder and the inner corrugated pipe. Multiple connecting pipes are provided, and these multiple connecting pipes are centrally symmetrically distributed. The other side of the annular air bladder... An exhaust mechanism is provided on one side together with the outer bellows. The dual design of the outer and inner bellows improves the overall strength of the compensator, enhances its explosion-proof effect, and extends its service life. The annular airbag allows for adaptive adjustment of the excess air pressure in the inner bellows, preventing it from rupturing due to excessive pressure. When the air pressure inside the annular airbag is high, the exhaust mechanism releases the gas to relieve pressure, thus protecting both the annular airbag and the inner bellows. Once the air pressure inside the inner bellows decreases, the exhaust mechanism stops venting, achieving automatic exhaust and pressure relief to protect the inner bellows.

[0008] Preferably, the inner wall of the inner bellows is fixedly connected with reinforcing ribs, which are horizontally arranged with the end face of the connecting flange. Multiple reinforcing ribs are provided and evenly distributed. The reinforcing ribs can improve the overall strength of the compensator, enhance its explosion-proof effect, and extend its service life.

[0009] Preferably, the exhaust mechanism includes a through pipe, which is fixedly connected between the surface of the annular airbag and the inner wall of the outer corrugated pipe. The number of through pipes is set to multiple. The surface of the outer corrugated pipe is provided with through holes, which are located inside the through pipes. The through pipes can connect the annular airbag and the outer corrugated pipe, and can provide an environment for subsequent exhaust and automatic sealing.

[0010] Preferably, a sealing plug is slidably connected inside the through pipe, and a retaining spring is elastically connected between one side of the sealing plug and the inner wall of the outer bellows, so that the through hole is not blocked by the retaining spring.

[0011] Preferably, the inner wall of the through pipe has limit grooves at the top and bottom, and the top and bottom of the sealing plug are fixedly connected to limit blocks. The limit blocks are slidably connected inside the limit grooves. As the air pressure inside the annular airbag gradually increases, the gas will push against the sealing plug and move into the through pipe. The through pipe will no longer be blocked, and the gas will enter the inside of the through pipe and finally be discharged from the outer bellows through the through hole, thereby achieving the purpose of depressurizing the inside of the compensator.

[0012] Preferably, both the outer and inner corrugated pipes are made of stainless steel. The use of stainless steel outer and inner corrugated pipes increases the strength of the compensator, improves its performance, and extends its service life.

[0013] (III) Beneficial Effects

[0014] This utility model provides a stainless steel flange compensator. It has the following advantages:

[0015] (I) This stainless steel flange compensator, through the setting of connecting pipe, annular air bladder and exhaust mechanism, etc., the setting of annular air bladder can adaptively adjust the excess air pressure in the inner bellows, preventing the inner bellows from being ruptured and damaged due to excessive air pressure. The exhaust mechanism releases and relieves pressure in the annular air bladder, thereby achieving the purpose of automatic exhaust and pressure relief to protect the inner bellows. Thus, through the setting of connecting pipe, annular air bladder and exhaust mechanism, the compensator's adaptive adjustment capability under high pressure is improved, and the overall service life of the compensator is extended.

[0016] (ii) The stainless steel flange compensator, through the double-set outer and inner bellows, can improve the overall strength of the compensator, enhance the explosion-proof effect of the compensator, extend the overall service life of the compensator, and further strengthen the compensator through the reinforcing ribs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0019] Figure 3 This is a front sectional view of the entire utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This utility model Figure 4 Enlarged view of section B in the middle.

[0022] In the diagram: 1. Outer bellows; 2. Inner bellows; 3. Connecting flange; 4. Annular airbag; 5. Connecting pipe; 6. Exhaust mechanism; 61. Through pipe; 62. Through hole; 63. Sealing plug; 64. Anti-locking spring; 65. Limiting groove; 66. Limiting block; 7. Reinforcing rib. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] See Figure 1-5 This utility model provides a technical solution: a stainless steel flange compensator, the structure of which includes an outer bellows 1 and an inner bellows 2. The inner bellows 2 is sleeved inside the outer bellows 1, and the expansion arc surfaces of the outer bellows 1 and the inner bellows 2 are relatively parallel. Connecting flanges 3 are fixedly connected to both ends of the outer bellows 1. Flange holes are opened on the surface of the connecting flanges 3. An annular airbag 4 is provided between the outer bellows 1 and the inner bellows 2. The annular airbag 4 is located between the vertical surfaces of the outer bellows 1 and the inner bellows 2. One side of the annular airbag 4 and the inner bellows 2 are connected to a connecting pipe 5. Multiple connecting pipes 5 are provided, and the multiple connecting pipes 5 are centrally symmetrically distributed. The other side of the annular airbag 4 and the outer bellows 1 are provided with an exhaust mechanism 6. Firstly, through... The compensator is fixed in the required position by connecting flange 3 and flange hole. The dual setting of outer bellows 1 and inner bellows 2 can improve the overall strength of the compensator, enhance its explosion-proof effect, and extend its overall service life. The setting of annular airbag 4 can adaptively adjust the excess air pressure in inner bellows 2 to prevent it from rupturing due to excessive air pressure. When the air pressure inside annular airbag 4 is high, the gas in annular airbag 4 is discharged and depressurized through exhaust mechanism 6, thereby protecting annular airbag 4 and inner bellows 2. When the air pressure inside inner bellows 2 decreases, the exhaust mechanism stops venting, realizing the purpose of automatic exhaust and depressurization to protect inner bellows 2.

[0025] Among them, the inner wall of the inner bellows 2 is fixedly connected with a reinforcing rib 7. The reinforcing rib 7 is set horizontally with the end face of the connecting flange 3. There are multiple reinforcing ribs 7, which are evenly distributed. The reinforcing ribs 7 can improve the overall strength of the compensator, enhance the explosion-proof effect of the compensator, and extend the service life of the compensator.

[0026] The exhaust mechanism 6 includes a through pipe 61, which is fixedly connected between the surface of the annular airbag 4 and the inner wall of the outer corrugated pipe 1. The number of through pipes 61 is set to multiple. The surface of the outer corrugated pipe 1 is provided with through holes 62, which are located inside the through pipes 61. The through pipes 61 can connect the annular airbag 4 and the outer corrugated pipe 1, and can provide an environment for subsequent exhaust and automatic sealing.

[0027] The passage 61 is slidably connected to a sealing plug 63. One side of the sealing plug 63 is elastically connected to the inner wall of the outer bellows 1 with a retaining spring 64, so that the passage hole 62 is not blocked by the retaining spring 64.

[0028] The inner wall of the through pipe 61 has limit grooves 65 at the top and bottom. The top and bottom of the sealing plug 63 are fixedly connected to limit blocks 66. The limit blocks 66 are slidably connected inside the limit grooves 65. As the air pressure inside the annular airbag 4 gradually increases, the gas will push against the sealing plug 63 and move into the through pipe 61. The through pipe 61 will no longer be blocked, and the gas will enter the inside of the through pipe 61 and finally be discharged from the outer bellows 1 through the through hole 62, thereby achieving the purpose of depressurizing the inside of the compensator.

[0029] Both the outer corrugated pipe 1 and the inner corrugated pipe 2 are made of stainless steel. The use of stainless steel outer corrugated pipe 1 and inner corrugated pipe 2 increases the strength of the compensator, improves its strength, and extends its service life.

[0030] Working principle: First, the compensator is fixed in the required position through the connecting flange 3 and the flange hole. During normal use, the compensator will expand and contract according to the stress inside the pipeline. The external bellows 1 and the inner bellows 2 will extend or shorten. When the internal pressure of the compensator is high, in order to balance the internal air pressure of the compensator, gas will enter the interior of the annular air bladder 4 through the connecting pipe 5, thereby balancing the problem of excessive air pressure inside the inner bellows 2. When the air pressure inside the inner bellows 2 continues to increase, the air pressure inside the annular air bladder 4 also gradually increases. At this time, the gas will push against the sealing plug 63 and move into the interior of the connecting pipe 61. The passage pipe 61 is no longer blocked, and gas enters the interior of the passage pipe 61. Finally, it is discharged from the outer bellows 1 through the through hole 62, thereby achieving the purpose of depressurizing the interior of the compensator until the internal air pressure of the inner bellows 2 returns to normal. After the internal air pressure decreases, the sealing plug 63 returns to its original position to continue blocking one end of the passage pipe 61, so that the gas inside the compensator no longer continues to be discharged. Thus, through the setting of the outer bellows 1, inner bellows 2, annular airbag 4 and exhaust mechanism 6, the internal pressure of the compensator is reduced to prevent the entire compensator from exploding, thereby improving the safety of the compensator during use and extending the service life of the compensator.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stainless steel flange compensator, comprising an outer bellows (1) and an inner bellows (2), characterized in that: The inner corrugated pipe (2) is sleeved inside the outer corrugated pipe (1), and the expansion arc surfaces of the outer corrugated pipe (1) and the inner corrugated pipe (2) are relatively parallel. The two ends of the outer corrugated pipe (1) are fixedly connected to the connecting flange (3), and the surface of the connecting flange (3) is provided with flange holes. An annular airbag (4) is provided between the outer corrugated pipe (1) and the inner corrugated pipe (2). The annular airbag (4) is located between the vertical surfaces of the outer corrugated pipe (1) and the inner corrugated pipe (2). One side of the annular airbag (4) and the inner corrugated pipe (2) are connected to a connecting pipe (5). The number of connecting pipes (5) is set to multiple, and the multiple connecting pipes (5) are centrally symmetrically distributed. The other side of the annular airbag (4) and the outer corrugated pipe (1) are provided with an exhaust mechanism (6).

2. A stainless steel flange compensator according to claim 1, characterized in that: The inner wall of the inner corrugated pipe (2) is fixedly connected with a reinforcing rib (7). The reinforcing rib (7) is horizontally arranged with the end face of the connecting flange (3). There are multiple reinforcing ribs (7), and the multiple reinforcing ribs (7) are evenly distributed.

3. A stainless steel flange compensator according to claim 1, characterized in that: The exhaust mechanism (6) includes a through pipe (61), which is fixedly connected between the surface of the annular airbag (4) and the inner wall of the outer corrugated pipe (1). The number of through pipes (61) is set to multiple. A through hole (62) is opened on the surface of the outer corrugated pipe (1), and the through hole (62) is located inside the through pipe (61).

4. A stainless steel flange compensator according to claim 3, characterized in that: The inside of the through pipe (61) is slidably connected to a sealing plug (63), and one side of the sealing plug (63) is elastically connected to the inner wall of the outer corrugated pipe (1) by a retaining spring (64), so that the through hole (62) is not blocked by the retaining spring (64).

5. A stainless steel flange compensator according to claim 4, characterized in that: The inner wall of the tube (61) has a limiting groove (65) at the top and bottom. The top and bottom of the sealing plug (63) are fixedly connected to a limiting block (66), and the limiting block (66) is slidably connected inside the limiting groove (65).

6. A stainless steel flange compensator according to claim 1, characterized in that: Both the outer corrugated pipe (1) and the inner corrugated pipe (2) are made of stainless steel.

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